Optimal Siting and Sizing of DG Employing Multi-objective Particle Swarm Optimization for Network Loss Reduction and Voltage Profile Improvement

Abstract

Day by day employing Distributed Generation (DG) is increasing and it is becoming an indispensable small capacity generation in the distribution system. It is cost effective, eco-friendly and it can enhance the reliability of the distribution network. This paper proposes a technique for optimal sizing and siting of DG, using modified Particle Swarm Optimization technique. It is proposed for optimal placement and sizing of DG. Since the objective is both reduction of losses and voltage profile improvement the multi objective function is chosen and by choosing appropriately desired level of emphasis is given to both the objectives. Also, by using an index Multi Objective Ranking Index (MORI) the best combination of loss reduction and voltage profile improvement is obtained. The effectiveness of the methodology is tested on standard IEEE-33 bus system and results are presented.